Emission controller, driving method, and display device

ABSTRACT

The present disclosure provides an emission controller, a driving method thereof, and a display device. The emission controller includes a first processing module, a second processing module, a third processing module, an output module and a shift control module. The first processing module generates a first signal in response to a first control signal, a second control signal and a second signal. The second processing module generates a second signal in response to the first control signal and the first signal. The third processing module generates third and fourth signals in response to the second control signal, the second and first signals. The output module provides emission control signal in response the first and fourth signal. The shift control module provides a shift control signal in response to the first and fourth signal, or provides a shift control signal in response to the first and third signal.

CROSS-REFERENCE TO RELATED APPLICATIONS

The present disclosure is a divisional application of U.S. Ser. No.16/137,602, filed Sep. 21, 2018, which claims priority to Chinese PatentApplication No. 201810253070.6, filed on Mar. 26, 2018; the content ofthese applications is incorporated herein by reference in its entirety.

TECHNICAL FIELD

The present disclosure relates to the field of display technologies, andin particular, to an emission control circuit, a driving method for theemission control circuit, an emission controller, and a display device.

BACKGROUND

Generally, a display device includes a plurality of sub-pixels disposedon a display panel and an emission controller for driving a sub-pixel toemit light. The emission controller includes a plurality of cascadedemission control circuits.

In the related art, each emission control circuit includes an outputterminal, which is connected to an emission control line provided in adisplay area and to a starting signal terminal of a next emissioncontrol circuit. However, with such connecting manner, wiring in thedisplay area would influence an emission control signal output by theemission control circuit, thereby influencing inputting a startingsignal into the next emission control circuit and further impacting thedisplay quality.

SUMMARY

The present disclosure provides an emission control circuit, a drivingmethod, an emission controller, and a display device, which are used toimprove stability of a starting signal received by the emission controlcircuit and improve the display quality.

In a first aspect, the present disclosure provides an emission controlcircuit, including: a first processing module, a second processingmodule, a third processing module, an output module, and a shift controlmodule. The first processing module is electrically connected to astarting signal terminal, a first voltage signal terminal, a firstcontrol signal terminal, and a second control signal terminal. The firstprocessing module generates a first signal to a first node in responseto a first control signal, a second control signal, and a second signal.The second processing module is electrically connected to the firstcontrol signal terminal and a second voltage signal terminal. The secondprocessing module generates the second signal to a second signal node inresponse to the first control signal and the first signal. The thirdprocessing module is electrically connected to the second control signalterminal and the first voltage signal terminal. The third processingmodule generates a third signal to a third node and generates a fourthsignal to a fourth node in response to the second control signal, thesecond signal, and the first signal. The output module is electricallyconnected to the first voltage signal terminal, the second voltagesignal terminal, and an output terminal. The output module provides anemission control signal to the output terminal in response to the firstsignal and the fourth signal. The shift control module is electricallyconnected to the first voltage signal terminal and a shift controlterminal. The shift control module provides a shift control signal tothe shift control terminal in response to the first signal and thefourth signal, or the shift control module provides a shift controlsignal to the shift control terminal in response to first signal and thethird signal.

In a second aspect, the present disclosure provides a driving method forthe abovementioned emission control circuit. The driving method includessteps of: in a first period in which the starting signal terminalprovides low level, the first control signal terminal provides low leveland the second control signal terminal provides high level, generating,by the first processing module, low level to the first node in responseto low level provided by the first control signal terminal, generating,by the second processing module, low level to the second node inresponse to low level provided by the first control signal terminal andlow level at the first node, generating, by the third processing module,high level to the third node and high level to the fourth node inresponse to low level at the second node and low level at the firstnode, controlling, by the output module, the output terminal to outputlow level in response to low level at the first node, and controlling,by the shift control module, the shift control terminal to output lowlevel in response to the first signal; in a second period in which thestarting signal terminal provides low level, the first control signalterminal provides high level, the second control signal terminalprovides low level, and the first node is maintained at low level,generating, by the second processing module, high level to the secondnode in response to low level at the first node, maintaining high levelat the third node, maintaining high level at the fourth node,maintaining low level output at the output terminal, and maintaining lowlevel output at the shift control terminal; in a third period in whichthe starting signal terminal provides high level, the first controlsignal terminal provides low level, and the second control signalterminal provides high level, generating, by the first processingmodule, high level to the first node in response to low level providedby the first control signal terminal, generating, by the secondprocessing module, low level to the second node in response to low levelprovided by the first control signal terminal, generating, by the thirdprocessing module, high level to the third node in response to low levelat the second node, maintaining high level at the fourth node,maintaining low level output at the output terminal, and maintaining lowlevel output at the shift control terminal; in a fourth period in whichthe starting signal terminal provides high level, the first controlsignal terminal provides high level, the second control signal terminalprovides low level, and the first node is maintained at high level andthe second node is maintained at low level, generating, by the thirdprocessing module, low level to the third node and low level to thefourth node in response to low level at the second node and low levelprovided by the second control signal terminal, controlling, by theoutput module, the output terminal to output high level in response tolow level at the fourth node, and controlling, by the shift controlmodule, the shift control terminal to output high level in response tolow level at the third node or the fourth node; and in a fifth period,the starting signal terminal provides high level, the first controlsignal terminal provides low level, the second control signal terminalprovides high level, and the first node is maintained at high level andthe second node is maintained at low level, generating, by the thirdprocessing module, high level to the third node in response to low levelat the second node, maintaining low level at the fourth node,maintaining high level output at the output module, controlling, by theshift control module, the shift control terminal to output high level inresponse to low level at the third node, or controlling, by the shiftcontrol module, the shift control terminal to output high level or lowlevel in response to low level at the fourth node.

In a third aspect, the present disclosure provides an emissioncontroller, and the emission controller includes a plurality of cascadedemission control circuits. Among the plurality of cascaded emissioncontrol circuits, the shift control terminal of an emission controlcircuit is electrically connected to the starting signal terminal of anext emission control circuit.

In a fourth aspect, the present disclosure provides a display device,and display device includes the abovementioned emission controller.

BRIEF DESCRIPTION OF DRAWINGS

In order to more clearly illustrate technical solutions in embodimentsof the present disclosure or in the related art, the accompanyingdrawings used in the embodiments and in the related art are brieflyintroduced as follows. Obviously, the drawings described as follows aremerely part of the embodiments of the present disclosure, and otherdrawings can also be acquired by those skilled in the art without payingcreative efforts.

FIG. 1 is a structural schematic diagram of a display device in therelated art;

FIG. 2 is a structural schematic diagram of an emission controller inthe related art;

FIG. 3 is a structural schematic diagram of an emission control circuitaccording to an embodiment of the present disclosure;

FIG. 4 is a signal sequence diagram corresponding to FIG. 3;

FIG. 5 is another structural schematic diagram of an emission controlcircuit according to an embodiment of the present disclosure;

FIG. 6 is a signal sequence diagram corresponding to FIG. 5;

FIG. 7 is still another structural schematic diagram of an emissioncontrol circuit according to an embodiment of the present disclosure;

FIG. 8 is a structural schematic diagram of an emission controlleraccording to an embodiment of the present disclosure; and

FIG. 9 is a structural schematic diagram of a display device accordingto an embodiment of the present disclosure.

DESCRIPTION OF EMBODIMENTS

For better illustrating the technical solutions of the presentdisclosure, the embodiments of the present disclosure will be describedin detail as follows with reference to the accompanying drawings.

It should be noted that, the described embodiments are merely exemplaryembodiments of the present disclosure, which shall not be interpreted asproviding limitations to the present disclosure. All other embodimentsobtained by those skilled in the art without creative efforts accordingto the embodiments of the present disclosure are within the protectionscope of the present disclosure.

The terms used in the embodiments of the present disclosure are merelyfor the purpose of describing particular embodiments but not intended tolimit the present disclosure. Unless otherwise noted in the context, thesingular form expressions “a”, “an”, “the” and “said” used in theembodiments and appended claims of the present disclosure are alsointended to represent plural form expressions thereof.

It should be understood that the term “and/or” used herein is merely anassociation relationship describing associated objects, indicating thatthere may be three relationships, for example, A and/or B may indicatethat three conditions of: A only, both A and B, and B only. Furthermore,the character “/” in the text generally indicates an “or” relationshipof the previous and following related objects.

It should be understood that, although the processing module may bedescribed using the terms of “first”, “second”, “third”, etc., in theembodiments of the present disclosure, the processing module will not belimited to these terms. These terms are merely used to distinguish theprocessing modules from one another. For example, without departing fromthe scope of the embodiments of the present disclosure, a firstprocessing module may also be referred to as a second processing module,and similarly, a second processing module may also be referred to as afirst processing module.

For better illustrating the technical solutions provided by theembodiments of the present disclosure, the structure of the displaydevice will first be described in details in the following.

As shown in FIG. 1, which is a structural schematic diagram of a displaydevice in the related art, the display device includes a display panel1′. The display panel 1′ is provided thereon with a plurality ofsub-pixels 2′ arranged in m rows and n columns. In addition, the displaydevice further includes a timing controller 3′, a scanning controller4′, an emission controller 5′, and a data controller 6′. The scanningcontroller 4′ has m output terminals, each of which is connected to arow of sub-pixels 2′ through a respective one scanning line Scan′. Theemission controller 5′ has m output terminals, each of which isconnected to a row of sub-pixels 2′ through a respective one emissioncontrol line Emit′. The data controller 6′ has n output terminals, eachof which is connected to a column of sub-pixels 2′ through a respectiveone data line Data′. The timing controller 3′ is connected to thescanning controller 4′, the emission controller 5′, and the datacontroller 6, and is configured to provide a corresponding drivingsignal to the scan controller 4′, the emission controller 5′, and thedata controller 6′, respectively.

The timing controller 3′ generates a first driving signal, a seconddriving signal, and a third driving signal in response to a receivedcontrol signal. The scanning controller 4′ generates a scanning signalin response to a first control signal, and the scanning signal issequentially applied to a first row of sub-pixels 2′ to an m^(th) row ofsub-pixels 2′ through the m scanning lines Scan′. The data controller 6′generates a data signal in response to a second control signal, and thedata signal is applied to a first column of sub-pixels 2′ to an n^(th)row of sub-pixels 2′ through the n data lines Data′. The emissioncontroller 5′ generates an emission control signal in response to athird control signal, and the emission control signal is applied to thefirst row of sub-pixels 2′ to the m^(th) row of sub-pixels 2′ throughthe m emission control lines. When an i^(th) row of sub-pixels 2′receive the emission control signal, the i^(th) row of sub-pixels 2′emit light under the effect of the data signal applied in advance, wherei=1−m.

As shown in FIG. 2, FIG. 2 is a structural schematic diagram of anemission controller in the related art. In the related art, the emissioncontroller 5′ includes m cascaded emission control circuits 51′, each ofwhich has an output terminal OUT′ connected to one emission control lineEmit′. In addition, for two adjacent cascaded emission control circuits,an output terminal OUT′ of an emission control circuit is connected to astarting signal terminal IN′ of the next emission control circuit.

Since the output terminal OUT′ of each emission control circuit 51′ isconnected to an emission control line Emit′ located in the display area,on the one hand, with the influence of the wiring load of the emissioncontrol line Emit′ and the coupling capacitance at an overlapping areabetween the emission control line Emit′ and the other wiring, therewould be a certain delay for the emission control signal outputted fromthe emission control circuit 51′. If the wiring load and the couplingcapacitance are large, the delay for the emission control signal wouldbe too large, thereby impacting inputting the starting signal into thenext emission control circuit. On the other hand, when the emissioncontrol line Emit′ is short-circuited with another line, the emissioncontrol signal may be interfered by another signal, resulting in that anelectric potential of the emission control signal may deviate from itsstandard value and thereby influencing inputting the starting signalinto the next emission control circuit.

Therefore, with the solution in the related art, each emission controlcircuit 51′ is connected to both the emission control line Emit′ and thestarting signal terminal IN′ of the next emission control circuit, andthe wiring in the display area has an impact on the emission controlsignal outputted by the emission control circuit 51′, therebyinfluencing inputting the starting signal into the next emission controlcircuit and further influencing normal display of an image.

In order to solve the abovementioned problem, an embodiment of thepresent disclosure provides an emission control circuit. As shown inFIG. 3, which is a structural schematic diagram of an emission controlcircuit according to an embodiment of the present disclosure, theemission control circuit includes a first processing module 1, a secondprocessing module 2, a third processing module 3, an output module 4,and a shift control module 5.

The first processing modulel is electrically connected to a startingsignal terminal IN, a first voltage signal terminal VGH, a first controlsignal terminal CK, and a second control signal terminal CKB. The firstprocessing module 1 generates a first signal to a first node N1 inresponse to a first control signal, a second control signal provided bythe second control signal terminal CKB and a second signal. Theprocessing module 2 is electrically connected to the first controlsignal terminal CK and a second voltage signal terminal VGL. The secondprocessing module 2 generates the second signal to a second node N2 inresponse to a first control signal provided by the first control signalterminal CK and the first signal. The third processing module 3 iselectrically connected to the second control signal terminal CKB and thefirst voltage signal terminal VGH. The third processing module 3generates a third signal at a third node N3 and a fourth signal to afourth node N4 in response to the second control signal, the secondsignal and the first signal. The output module 4 is electricallyconnected to the first voltage signal terminal VGH, the second voltagesignal terminal VGL and the output terminal OUT, and the output module 4provides the emission control signal to the output terminal OUT inresponse to the first signal and a fourth signal. The shift controlmodule 5 is electrically connected to the first voltage signal terminalVGH and a shift control terminal NEXT. The shift control module 5provides a shift control signal to the shift control terminal NEXT inresponse to the first signal and the fourth signal, or, the shiftcontrol module 5 provides the shift control signal to the shift controlterminal NEXT in response to the first signal and the third signal.

It should be noted that in the emission control circuit provided by theembodiments of the present disclosure, the output terminal OUT of theemission control circuit is connected to a light-emitting control line,and the output terminal OUT is used to output an emission controlsignal. The emission control signal is transmitted to a sub-pixelthrough the light-emitting control line so as to drive the correspondingsub-pixel to emit light. The shift control terminal NEXT is connected tothe starting signal terminal IN of the next emission control circuit,and the shift control terminal NEXT is used to transmit a startingsignal to the next emission control circuit so as to drive the nextemission control circuit to operate.

Taking the first emission control circuit and the second emissioncontrol circuit as an example, and in combination with FIG. 4, which isa signal sequence diagram corresponding to FIG. 3, the driving methodfor the emission control circuit will be described in details asfollows.

First, it can be understood that the first control signal terminal CK ofthe first emission control circuit and the second control signalterminal CKB of the second emission control circuit are connected to afirst clock signal line, and the second control signal terminal CKB ofthe first emission control circuit and the first control signal terminalCK of the second emission control circuit are connected to a secondclock signal line.

A driving period for each emission control circuit includes a firstperiod to a fifth period.

In the first period t1 of the first emission control circuit, thestarting signal terminal IN of the first emission control circuitprovides low level, the first clock signal line provides low level, andthe second clock signal line provides high level (for the sake ofunderstanding, the signals provided by the first clock signal line andthe second clock signal line are respectively denoted by CK1 and CK2 inFIG. 4). The first processing module 1 generates low level to the firstnode N1 in response to low level received by the first control signalterminal CK (for the sake of understanding, signals at the first node N1to the fourth node N4 of the first emission control circuit arerespectively denoted by N11 to N41 in FIG. 4). The second processingmodule 2 generates low level to the second node N2 in response to lowlevel received by the first control signal terminal CK and low level atthe first node N1. The third processing module 3 generates high level tothe third node N3 and generates high level to the fourth node N4 inresponse to low level at the second node N2 and low level at the firstnode N1. The output module 4 causes the output terminal OUT to outputlow level in response to low level at the first node N1 (for the sake ofunderstanding, the signal outputted by the output terminal OUT of thefirst emission control circuit is denoted by OUT1 in FIG. 4). The shiftcontrol module 5 causes the shift control terminal NEXT to output lowlevel in response to the first signal (for the sake of understanding,the signal outputted by the shift control terminal NEXT of the firstemission control circuit is denoted by NEXT1).

In the second period t2 of the first emission control circuit, thestarting signal terminal IN provides low level, the first clock signalline provides high level, and the second clock signal line generates lowlevel. The first node N1 maintains at low level. The second processingmodule 2 provides high level to the second node N2 in response to lowlevel at the first node N1. The third node N3 maintains at high level.The fourth node N4 maintains at high level. The output terminal OUTmaintains low level output. The shift control terminal NEXT maintainslow level output. At the same time, the starting signal terminal IN ofthe second emission control circuit receives low level outputted by theshift control terminal NEXT of the first emission control circuit, thefirst control signal terminal CK of the second emission control circuitreceives low level provided by the second clock signal line, the secondcontrol signal terminal CKB of the second emission control circuitreceives high level provided by the first clock signal line, and thesecond emission control circuit is in the first period t1.

In the third period t3 of the first emission control circuit, thestarting signal terminal IN provides high level, the first clock signalline provides low level, and the second clock signal line provides highlevel. The first processing module 1 generates high level to the firstnode N1 in response to low level received by the first control signalterminal CK. The second processing module 2 generates low level to thesecond node N2 in response to low level received by the first controlsignal terminal CK. The third processing module 3 generates high levelto the third node N3 in response to low level at the second node N2. Thefourth node N4 maintains at high level. The output terminal OUTmaintains low level output. The shift control terminal NEXT maintainslow level output. At the same time, the starting signal terminal IN ofthe second emission control circuit receives low level outputted by theshift control terminal NEXT of the first emission control circuit, thefirst control signal terminal CK of the second emission control circuitreceives high level provided by the second clock signal line, the secondcontrol signal terminal CKB of the second emission control circuitreceives low level provided by the first clock signal line, and thesecond emission control circuit is in the second period t2.

In the fourth period t4 of the first emission control circuit, thestarting signal terminal IN provides high level, the first clock signalline provides high level, and the second clock signal line provides lowlevel. The first node N1 maintains at high level. The second node N2maintains at low level. The third processing module 3 generates lowlevel to the third node N3 and generates low level to the fourth node N4in response to low level at the second node N2 and low level received bythe second control signal terminal CKB. The output module 4 causes theoutput terminal OUT to output high level response to low level at thefourth node N4. The shift control module 5 causes the shift controlterminal NEXT to output high level in response to low level at the thirdnode N3 or the fourth node N4. At the same time, the starting signalterminal IN of the second emission control circuit receives high leveloutputted by the shift control terminal NEXT of the first emissioncontrol circuit, the first control signal terminal CK of the secondemission control circuit receives low level provided by the second clocksignal line, the second control signal terminal CKB of the secondemission control circuit receives high level provided by the first clocksignal line, and the second emission control circuit is in the thirdtime period t3.

In the fifth period t5 of the first emission control circuit, thestarting signal terminal IN provides high level, the first clock signalline provides low level, and the second clock signal line provides highlevel. The first node N1 maintains at high level. The second node N2maintains at low level. The third processing module 3 generates highlevel to the third node N3 in response to low level at the second nodeN2. The fourth node N4 maintains at low level. The output module 4maintains high level output. The shift control module 5 causes the shiftcontrol terminal NEXT to output high level in response to low level atthe third node N3, or, the shift control module 5 causes the shiftcontrol terminal NEXT to output high level or low level in response tolow level at the fourth node N4. At the same time, the starting signalterminal IN of the second emission control circuit receives high levelor low level outputted by the shift control terminal NEXT of the firstemission control circuit, the first control signal terminal CK of thesecond emission control circuit receives high level provided by thesecond clock signal line, the second control signal terminal CKB of thesecond emission control circuit receives low level provided by the firstclock signal line, and the second emission control circuit is in thefourth period t4.

According to the analysis of the driving process of the emission controlcircuit described above, based on the structure of the emissionstructuring circuit provided by the embodiments of the presentdisclosure, a plurality of emission control circuits sequentiallyoutputs a light-emitting control signal so as to achieve time-divisiondriving of multiple rows of sub-pixels. Moreover, the emission controlcircuit outputs a shift control signal to the next emission controlcircuit through the shift control terminal NEXT. Since the shift controlterminal NEXT is not connected to the wiring in the display area, on theone hand, a delay of the shift control signal caused by a wiringresistance and a coupling capacitance can be avoided, and on the otherhand, a deviation of the shift control signal from its standard valuecaused by interference from the other wiring in the display area canalso be avoided. Therefore, with the emission control circuit providedby the embodiments of the present disclosure, the influence of thewiring in the display area on the shift control signal can be avoided,such that the shift control signal can be stably transmitted to thestarting signal terminal IN of the next emission control circuit andthus the next emission control circuit can operate normally, therebyachieving normal display of the image and thus improving the displayquality.

Optionally, with further reference to FIG. 3, the first processingmodule 1 includes a first thin film transistor M1, a second thin filmtransistor M2, and a third thin film transistor M3.

A control electrode of the first thin film transistor M1 is electricallyconnected to the first control signal terminal CK, a first electrode ofthe first thin film transistor M1 is electrically connected to the firstnode N1, and a second electrode of the first thin film transistor M1 iselectrically connected to the starting signal terminal IN. The firstthin film transistor M1 controls the electrical connection of the firstnode N1 with the starting signal terminal IN according to the appliedfirst control signal.

A control electrode of the second thin film transistor M2 iselectrically connected to the second control signal terminal CKB, and asecond electrode of the second thin film transistor M2 is electricallyconnected to the first node N1. The second thin film transistor M2controls the electrical connection between the first node N1 and thesecond control signal terminal CKB according to the applied secondcontrol signal.

A control electrode of the third thin film transistor M3 is electricallyconnected to the second node N2, a first electrode of the third thinfilm transistor M3 is electrically connected to the first voltage signalterminal VGH, and a second electrode of the third thin film transistorM3 is electrically connected to the first electrode of the second thinfilm transistor M2. The third thin film transistor M3 controls theelectrical connection of the first voltage signal terminal VGH with thefirst electrode of the second thin film transistor M2 according to thesecond signal applied to the second node N2.

Optionally, with further reference to FIG. 3, the second processingmodule 2 includes a fourth thin film transistor M4, a fifth thin filmtransistor M5, and a sixth thin film transistor M6.

A control electrode of the fourth thin film transistor M4 iselectrically connected to the first node N1, and a second electrode ofthe fourth thin film transistor M4 is electrically connected to thefirst control signal terminal CK.

A control electrode of the fifth thin film transistor M5 is electricallyconnected to the first node N1, a first electrode of the fifth thin filmtransistor M5 is electrically connected to the second node N2, and asecond electrode of the fifth thin film transistor M5 is electricallyconnected to a first electrode of the fourth thin film transistor M4.The fifth thin film transistor M5 controls the electrical connection ofthe second node N2 with the first electrode of the fourth thin filmtransistor M4 according to the first signal applied to the first nodeN1.

A control electrode of the sixth thin film transistor M6 is electricallyconnected to the first control signal terminal CK, a first electrode ofthe sixth thin film transistor M6 is electrically connected to thesecond node N2, and a second electrode of the sixth thin film transistorM6 is electrically connected to the second voltage signal terminal VGL.The sixth thin film transistor M6 controls the electrical connection ofthe second node N2 with the second voltage signal terminal VGL accordingto the applied first control signal.

Based on the connection manner of the fourth thin film transistor M4 andthe fifth thin film transistor M5, the fourth thin film transistor M4and the fifth thin film transistor M5 constitute a dual-gate transistor.For the dual-gate transistor, it has a large a channel length, i.e., asmall width-length ratio

$\frac{W}{L}.$According to the leakage current formula of

${I = {\frac{1}{2}\mu_{n}C_{ox}\frac{W}{L}( {V_{gs} - {V_{th}}} )^{2}}},$the smaller the width-length ratio

$\frac{W}{L}$is, the smaller the leakage current of the transistor is and the lowerthe concentration of the active current carriers in the transistor is,thereby leading to the more stable performance of the transistor.Therefore, with this arrangement, based on a strong stability of thedual-gate transistor, the circuit operation stability can be improved tosome extent.

In the above formula, I represents a leakage current, μ^(n) represents amigration rate of electrons, C_(ox) represents a gate oxide capacitanceper unit area,

$\frac{W}{L}$represents a channel width-length ratio, V_(gs) represents a gate-sourcevoltage, and V_(th) represents a threshold voltage.

Optionally, the third processing module 3 includes a first capacitor C1,a seventh thin film transistor M7, an eighth thin film transistor M8, aninth thin film transistor M9, and a second capacitor C2.

A first electrode of the first capacitor C1 is electrically connected tothe second node N2, and a second electrode of the first capacitor C1 iselectrically connected to the third node N3.

A control electrode of the seventh thin film transistor M7 iselectrically connected to the second node N2. A first electrode of theseventh thin film transistor M7 is electrically connected to the thirdnode N3, and a second electrode of the seventh thin film transistor M7is electrically connected to the second control signal terminal CKB. Theseventh thin film transistor M7 controls the electrical connection ofthe third node N3 with the second control signal terminal CKB accordingto the second signal applied to the second node N2.

A control electrode of the eighth thin film transistor M8 iselectrically connected to the second control signal terminal CKB. Afirst electrode of the eighth thin film transistor M8 is electricallyconnected to the third node N3, and a second electrode of the eighththin film transistor M8 is electrically connected to the fourth node N4.The eighth thin film transistor M8 controls the electrical connection ofthe third node N3 with the fourth node N4 according to the appliedsecond control signal.

A control electrode of the ninth thin film transistor M9 is electricallyconnected to the first node N1. A first electrode of the ninth thin filmtransistor M9 is electrically connected to the first voltage signalterminal VGH, and a second electrode of the ninth thin film transistorM9 is electrically connected to the fourth node N4. The ninth thin filmtransistor M9 controls the electrical connection of the first voltagesignal terminal VGH with the fourth node N4 according to the firstsignal applied to the first node N1.

A first electrode of the second capacitor C2 is electrically connectedto the first voltage signal terminal VGH, and a second electrode of thesecond capacitor C2 is electrically connected to the fourth node N4. Thesecond capacitor C2 serves as a storage capacitor and can hold thefourth signal of the fourth node N4, thereby achieving the normaloperation of the output module 4.

Optionally, with further reference to FIG. 3, the output module 4includes a tenth thin film transistor M10 and an eleventh thin filmtransistor M11.

A control electrode of the tenth thin film transistor M10 iselectrically connected to the fourth node N4. A first electrode of thetenth thin film transistor M10 is electrically connected to the firstvoltage signal terminal VGH, and a second electrode of the tenth thinfilm transistor M10 is electrically connected to the output terminalOUT. The tenth thin film transistor M10 controls the electricalconnection of the first voltage signal terminal VGH with the outputterminal OUT according to the fourth signal applied to the fourth nodeN4. When the tenth thin film transistor M10 is switched on, the firstvoltage signal provided by the first voltage signal terminal VGH istransmitted to the output terminal OUT, such that the output terminalOUT outputs high level.

A control electrode of the eleventh thin film transistor M11 iselectrically connected to the first node N1. A first electrode of theeleventh thin film transistor M11 is electrically connected to theoutput terminal OUT, and a second electrode of the eleventh thin filmtransistor M11 is electrically connected to the second voltage signalterminal VGL. The eleventh thin film transistor M11 controls theelectrical connection of the second voltage signal terminal VGL with theoutput terminal OUT according to the first signal applied to the firstnode N1. When the eleventh thin film transistor M11 is switched on, thesecond voltage signal provided by the second voltage signal terminal VGLis transmitted to the output terminal OUT, such that the output terminalOUT outputs low level.

In the following, the operation process of the emission control circuitwill be described in detail by taking three structures of the shiftcontrol module 5 as examples.

First Structure

Optionally, with further reference to FIG. 3, the shift control module 5includes a twelfth thin film transistor M12 and a thirteenth thin filmtransistor M13.

A control electrode of the twelfth thin film transistor M12 iselectrically connected to the first node N1. A first electrode of thetwelfth thin film transistor M12 is electrically connected to the shiftcontrol terminal NEXT, and a second electrode of the twelfth thin filmtransistor M12 is electrically connected to the second voltage signalterminal VGL. The twelfth thin film transistor M12 controls theelectrical connection of the second voltage signal terminal VGL with theshift control terminal NEXT according to the first signal applied to thefirst node N1.

A control electrode of the thirteenth thin film transistor M13 iselectrically connected to the fourth node N. A first electrode of thethirteenth thin film transistor M13 is electrically connected to thefirst node N1, and a second electrode of the thirteenth thin filmtransistor M13 is electrically connected to the shift control terminalNEXT. The thirteenth thin film transistor M13 controls the electricalconnection of the first node N1 with the shift control terminal NEXTaccording to the fourth signal applied to the fourth node N4.

In the following, all the thin film transistors in the emission controlcircuit are P-type thin film transistors by way of example, and thedriving method for the emission control circuit having the shift controlmodule 5 in the first structure will be described in detail withreference to FIG. 3 and FIG. 4.

In the first period t1, the starting signal terminal IN provides lowlevel, the first control signal terminal CK provides low level, and thesecond control signal terminal CKB provides high level. Low levelprovided by the starting signal terminal IN is transmitted to the firstnode N1 through the switched-on first thin film transistor M1. Low levelprovided by the first control signal terminal CK is transmitted to thesecond node N2 through the switched-on fourth thin film transistor M4and fifth thin film transistor M5. Low level provided by the secondvoltage signal terminal VGL is transmitted to the second node N2 throughthe switched-on sixth thin film transistor M6. High level provided bythe second control signal terminal CKB is transmitted to the third nodeN3 through the switched-on seventh thin film transistor M7. High levelprovided by the first voltage signal terminal VGH is transmitted to thefourth node N4 through the switched-on ninth thin film transistor M9.Low level provided by the second voltage signal terminal VGL istransmitted to the output terminal OUT through the switched-on elevenththin film transistor M11, that is, the output terminal OUT outputs lowlevel. Low level provided by the second voltage signal terminal VGL istransmitted to the shift control terminal NEXT through the switched-ontwelfth thin film transistor M12, that is, the shift control terminalNEXT outputs low level.

In the second period t2, the starting signal terminal IN provides lowlevel, the first control signal terminal CK provides high level, and thesecond control signal terminal CKB provided low level. The first node N1maintains at low level, high level provided by the first control signalterminal CK is transmitted to the second node N2 through the switched-onfourth thin film transistor M4 and fifth thin film transistor M5. Thethird node N3 maintains at high level. The four-node N4 maintains athigh level. The output terminal OUT maintains low level output. Theshift control terminal NEXT maintains low level output.

In the third period t3, the starting signal terminal IN provides highlevel, the first control signal terminal CK provides low level, and thesecond control signal terminal CKB provides high level. Low levelprovided by the second voltage signal terminal VGL is transmitted to thesecond node N2 through the switched-on sixth thin film transistor M6.High level provided by the first voltage signal terminal VGH istransmitted to the first node N1 through the switched-on third thin filmtransistor M3 and second thin film transistor M2. High level provided bythe second control signal terminal CKB is transmitted to the third nodeN3 through the switched-on seventh thin film transistor M7. The fourthnode N4 maintains at high level. The output terminal OUT maintains lowlevel output. The shift control terminal NEXT maintains low leveloutput.

In the fourth period t4, the starting signal terminal IN provides highlevel, the first control signal terminal CK provides high level, and thesecond control signal terminal CKB provides low level. The first node N1maintains at high level. The second node N2 maintains at low level. Lowlevel provided by the second control signal terminal CKB is transmittedto the third node N3 through the switched-on seventh thin filmtransistor M7. Low level at the third node N3 is transmitted to thefourth node N4 through the switched-on eighth thin film transistor M8.High level provided by the voltage signal terminal VGH is transmitted tothe output terminal OUT through the switched-on tenth thin filmtransistor M10, such that the output terminal OUT outputs high level.High level at the first node N1 is transmitted to the shift controlterminal NEXT though the switched-on thirteenth thin film transistorM13, such that the shift control terminal NEXT outputs high level.

In the fifth period t5, the start signal terminal IN provides highlevel. The first control signal terminal CK provides low level. Thesecond control signal terminal CKB provides high level. The first nodeN1 maintains at high level. The second node N2 maintains at low level.High level provided by the second control signal terminal CKB istransmitted to the third node N3 through the switched-on seventh thinfilm transistor M7. The fourth node N4 maintains at low level. Theoutput terminal OUT maintains high level output. High level at the firstnode N1 is transmitted to the shift control terminal NEXT though theswitched-on thirteenth thin film transistor M13, such that the shiftcontrol terminal NEXT maintains high level output.

Second Structure

Optionally, as shown in FIG. 5, which is another structural schematicdiagram of an emission control circuit according to an embodiment of thepresent disclosure, the shift control module 5 includes a fourteenththin film transistor M14 and a fifteenth thin film transistor M15.

A control electrode of the fourteenth thin film transistor M14 iselectrically connected to the first node N1. A first electrode of thefourteenth thin film transistor M14 is electrically connected to theshift control terminal NEXT, and a second electrode of the fourteenththin film transistor M14 is electrically connected to the second voltagesignal terminal VGL. The fourteenth thin film transistor M14 controlsthe electrical connection of the shift control terminal NEXT with thesecond voltage signal terminal VGL according to the first signal appliedto the first node N1.

A control electrode of the fifteenth thin film transistor M15 iselectrically connected to the fourth node N4. A first electrode of thefifteenth thin film transistor M15 is electrically connected to thefirst control signal terminal CK, and a second electrode of thefifteenth thin film transistor M15 is electrically connected to theshift control terminal NEXT. The fifteenth thin film transistor M15controls the electrical connection of the shift control terminal NEXTwith the first control signal terminal CK according to the fourth signalapplied to the fourth node N4.

In the following, all the thin film transistors in the emission controlcircuit are P-type thin film transistors by way of example, and thedriving method for the emission control circuit having the shift controlmodule 5 in the second structure will be described in detail withreference to FIG. 5 and FIG. 6, which is a signal sequence diagramcorresponding to FIG. 5.

In the first period t1 to the third period t3, the operation process ofthe emission control circuit is the same as the operation process of theemission control circuit having the shift control module 5 in the firststructure, which will not be further described herein.

In the fourth period t4, the starting signal terminal IN provides highlevel, the first control signal terminal CK provides high level, and thesecond control signal terminal CKB provides low level. The first node N1maintains at high level. The second node N2 maintains at low level. Lowlevel provided by the second control signal terminal CKB is transmittedto the third node N3 through the switched-on seventh thin filmtransistor M7. Low level at the third node N3 is transmitted to thefourth node N4 through the switched-on eighth thin film transistor M8.High level provided by the first voltage signal terminal VGH istransmitted to the output terminal OUT through the switched-on tenththin film transistor M10, such that the output terminal OUT outputs highlevel. High level provided by the first control signal terminal CK istransmitted to the shift control terminal NEXT through the switched-onfifteenth thin film transistor M15, such that the shift control terminalNEXT outputs high level.

In the fifth period t5, the start signal terminal IN provides highlevel, the first control signal terminal CK provides low level, and thesecond control signal terminal CKB provides high level. The first nodeN1 maintains at high level. The second node N2 maintains at low level.High level provided by the second control signal terminal CKB istransmitted to the third node N3 through the switched-on seventh thinfilm transistor M7. The fourth node N4 maintains at low level. Theoutput terminal OUT maintains high level output. Low level provided bythe first control signal terminal CK is transmitted to the shift controlterminal NEXT through the switched-on fifteenth thin film transistorM15, such that the shift control terminal NEXT outputs low level.

In the emission control circuit having the shift control module 5 in thefirst structure, the shift control terminal NEXT of the emission controlcircuit outputs high level in the fifth period t5. In the emissioncontrol circuit having the shift control module 5 in the secondstructure, the shift control terminal NEXT of the emission controlcircuit outputs low level in the fifth period t5. Since the shiftcontrol signal outputted by the shift control terminal NEXT of theemission control circuit in the fifth period t5 is a starting signalreceived by the starting signal terminal IN of the next emission controlcircuit in the fourth period t4, in combination with the above analysisof the operation process of the emission control circuit in the fourthperiod t4, it can be known that in the fourth period t4, the first thinfilm transistor M1 is switched off under high level provided by thefirst control signal terminal CK, such that the signal provided by thestarting signal terminal IN cannot be transmitted to the first node N1.That is, in the fourth period t4, no matter whether the signal providedby the starting signal terminal IN is high level or low level, it willnot be transmitted to the first node N1. Therefore, whether the shiftcontrol terminal NEXT of the emission control circuit outputs high levelor low level in the fifth period t5 will not the influence normaloperation of the circuit.

Further, in the abovementioned shift control module 5, the firstelectrode of the fifteenth thin film transistor M15 is electricallyconnected to the first control signal terminal CK. Since the firstcontrol signal terminal CK is directly connected to the driving chipthrough the clock signal line, the signal received by the firstelectrode of the fifteenth thin film transistor M15 is provided by thedriving chip. Compared with signals of some nodes in the circuit, thesignal directly provided by the driving chip has the stronger stabilityand will not be easily interfered by other signals. Therefore, with theelectrical connection between the first electrode of the fifteenth thinfilm transistor M15 and the first control signal terminal CK, the shiftcontrol terminal NEXT can receive a stable low-level signal in thefourth period t4.

Third Structure

Optionally, as shown in FIG. 7, which is still another structuralschematic diagram of an emission control circuit according to anembodiment of the present disclosure, the shift control module 5includes a sixteenth thin film transistor M16 and a seventeenth thinfilm transistor M17.

A control electrode of the sixteenth thin film transistor M16 iselectrically connected to the first node N1. A first electrode of thesixteenth thin film transistor M16 is electrically connected to theshift control terminal NEXT. A second electrode of the sixteenth thinfilm transistor M16 is electrically connected to the second voltagesignal terminal VGL. The sixteenth thin film transistor M16 controls theelectrical connection of the shift control terminal NEXT with the secondvoltage signal terminal VGL according to the first signal applied to thefirst node N1.

A control electrode of the seventeenth thin film transistor M17 iselectrically connected to the third node N3. A first electrode of theseventeenth thin film transistor M17 is electrically connected to thefirst node N1. A second electrode of the seventeenth thin filmtransistor M17 is electrically connected to the shift control terminalNEXT. The seventeenth thin film transistor M17 controls the electricalconnection of the shift control terminal NEXT with the first node N1according to the third signal applied to third node N3.

In the following, all the thin film transistors in the emission controlcircuit are P-type thin film transistors by way of example, and thedriving method for the emission control circuit having the shift controlmodule 5 in the third structure will be described in detail withreference to FIG. 5 and FIG. 3.

In the first period t1 to the third period t3, the operation process ofthe emission control circuit is the same as the operation process of theemission control circuit having the shift control module 5 in the firststructure, which will not be further described herein.

In the fourth period t4, the starting signal terminal IN provides highlevel. The first control signal terminal CK provides high level. Thesecond control signal terminal CKB provides low level. The first node N1maintains at high level. The second node N2 maintains at low level. Lowlevel provided by the second control signal terminal CKB is transmittedto the third node N3 through the switched-on seventh thin filmtransistor M7. Low level at the third node N3 is transmitted to thefourth node N4 through the switched-on eighth thin film transistor M8.High level provided by the first voltage signal terminal VGH istransmitted to the output terminal OUT through the switched-on tenththin film transistor M10, such that the output terminal OUT outputs highlevel. High level at the first node N1 is transmitted to the shiftcontrol terminal NEXT through the switched-on seventeenth thin filmtransistor M17, such that the shift control terminal NEXT outputs highlevel.

In the fifth period t5, the start signal terminal IN provides highlevel. The first control signal terminal CK provides low level. Thesecond control signal terminal CKB provides high level. The first nodeN1 maintains at high level. The second node N2 maintains at low level.High level provided by the second control signal terminal CKB istransmitted to the third node N3 through the switched-on seventh thinfilm transistor M7. The fourth node N4 maintains at low level. Theoutput terminal OUT maintains at high level. The shift control terminalNEXT maintains high level output.

With further reference to FIG. 3, FIG. 5 and FIG. 7, the emissioncontrol circuit further includes a third capacitor C3. A first electrodeof the third capacitor C3 is electrically connected to the first nodeN1, and a second electrode of the third capacitor C3 is electricallyconnected to the second control signal terminal CKB. When the emissioncontrol circuit includes the third capacitor C3, in the second periodt2, the third capacitor C3 can pull down the potential of the first nodeN1 under low level provided by the second control signal terminal CKB,and thus making the potential of the first node N1 be lower. This canallow the eleventh thin film transistor M11 to be switched on morecompletely, and thus low level provided by the second voltage signalterminal VGL can be better transmitted to the output terminal OUT.

An embodiment of the present disclosure further provides a drivingmethod for an emission control circuit, and the driving method for theemission control circuit is applied to the abovementioned emissioncontrol circuit.

With reference to FIG. 3 to FIG. 7, the driving method for the emissioncontrol circuit includes the following steps.

In the first period t1, the starting signal terminal IN provides lowlevel. The first control signal terminal CK provides low level. Thesecond control signal terminal CKB provides high level. The firstprocessing module 1 generates low level to the first node N1 in responseto low level provided by the first control signal terminal CK. Thesecond processing module 2 generates low level to the second node N2 inresponse to low level provided by the first control signal terminal CKand low level at the first node N1. The third processing module 3generates high level to the third node N3 and generates high level tothe fourth node N4 in response to low level at the second node N2 andlow level at the first node N1. The output module 4 causes the outputterminal OUT to output low level in response to low level at the firstnode N1. The shift control module 5 causes the shift control terminalNEXT to output low level in response to the first signal.

In the second period t2, the starting signal terminal IN provides lowlevel. The first control signal terminal CK provides high level. Thesecond control signal terminal CKB provides low level. The first node N1maintains at low level. The second processing module 2 generates highlevel to the second node N2 in response to low level at the first nodeN1. The third node N3 maintains at high level. The fourth node N4maintains at high level. The output terminal OUT maintains low leveloutput. The shift control terminal NEXT maintains low level output.

In the third period t3, the starting signal terminal IN provides highlevel. The first control signal terminal CK provides low level. Thesecond control signal terminal CKB provides high level. The firstprocessing module 1 generates high level to the first node N1 inresponse to low level provided by the first control signal terminal CK.The second processing module 2 generates low level to the second node N2in response to low level provided by the first control signal terminalCK. The third processing module 3 generates high level to the third nodeN3 in response to low level at the second node N2. The fourth node N4maintains at high level. The output terminal OUT maintains low leveloutput. The shift control terminal NEXT maintains low level output.

In the fourth period t4, the starting signal terminal IN provides highlevel. The first control signal terminal CK provides high level. Thesecond control signal terminal CKB provides low level. The first node N1maintains at high level. The second node N2 maintains at low level. Thethird processing module 3 generates low level to the third node N3 andgenerates low level to the fourth node N4 in response to low level atthe second node N2 and low level provided by the second control signalterminal CKB. The output module 4 causes the output terminal OUT tooutput high level in response to low level at the fourth node N4. Theshift control module 5 causes the shift control terminal NEXT to outputhigh level in response to low level at the third node N3 or the fourthnode N4.

In the fifth period t5, the starting signal terminal IN provides highlevel. The first control signal terminal CK provides low level. Thesecond control signal terminal CKB provides high level. The first nodeN1 maintains at high level. The second node N2 maintains at low level.The third processing module 3 generates high level to the third node N3in response to low level at the second node N2. The fourth node N4maintains at low level. The output module 4 maintains high level output.The shift control module 5 causes the shift control terminal NEXT tooutput high level in response to low level at the third node N3, or, theshift control module 5 causes the shift control terminal NEXT to outputhigh level or low level in response to low level at the fourth node N4.

The driving process for the emission control circuit has been describedin detail with reference to the above embodiments, and will not befurther described herein.

With the driving method for the emission control circuit provided by theembodiments of the present disclosure, the shift control signal isoutputted to a next emission control circuit by the shift controlterminal NEXT of the emission control circuit. Since the shift controlterminal NEXT is not connected to the wirings in the display area, theinfluence of the wirings in the display area on the shift control signalcan be avoided, such that the shift control signal can be stablytransmitted to the starting signal terminal IN of the next emissioncontrol circuit and thus the next emission control circuit can operatenormally, thereby achieving normal display of the image and improvingthe display quality.

In combination with FIG. 3 and FIG. 4, when the shift control module 5includes the twelfth thin film transistor M12 and the thirteenth thinfilm transistor M13, in the fourth period t4, controlling, by the shiftcontrol module 5, the shift control terminal NEXT to output high levelin response to low level at the fourth node N4 includes: in the fourthperiod t4, switching on the thirteenth thin film transistor M13 on underlow level at the fourth node N4, and transmitting high level at thefirst signal to the shift control terminal NEXT, such that the shiftcontrol terminal NEXT outputs high level.

In the fifth period t5, controlling, by the shift control module 5, theshift control terminal NEXT to output high level in response to lowlevel at the fourth node N4 includes: in the fifth period t5, switchingon the thirteenth thin film transistor M13 under low level at the fourthnode N4, and transmitting high level at the first node N1 to the shiftcontrol terminal NEXT, such that the shift control terminal NEXT outputshigh level.

In combination with FIG. 5 and FIG. 6, when the shift control module 5includes the fourteenth thin film transistor M14 and the fifteenth thinfilm transistor M15, in the fourth period t4, controlling, by the shiftcontrol module 5, the shift control terminal NEXT to output high levelin response to low level at the fourth node N4 includes: in the fourthperiod t4, switching on the fifteenth thin film transistor M15 on underlow level at the fourth node N4, and transmitting high level provided bythe first control signal terminal CK to the shift control terminal NEXT,such that the shift control terminal NEXT outputs high level.

In the fifth period t5, controlling, by the shift control module 5, theshift control terminal NEXT to output low level in response to low levelat the fourth node N4 includes: in the fifth period t5, switching on thefifteenth thin film transistor M15 under low level at the fourth nodeN4, and transmitting low level provided by the first control signalterminal CK to the shift control terminal NEXT, such that the shiftcontrol terminal NEXT outputs low level.

In combination with FIG. 7 and FIG. 3, when the shift control module 5includes the sixteenth thin film transistor M16 and the seventeenth thinfilm transistor M17, in the fourth period t4, controlling, by the shiftcontrol module 5, the shift control terminal NEXT to output high levelin response to low level at the third node N3 includes: in the thirdperiod t3, switching on the seventeenth thin film transistor M17 underlow level at the third node N3, and transmitting high level at the firstnode N1 to the shift control terminal NEXT, such that the shift controlterminal NEXT outputs high level.

The operation principle of the shift control modules 5 with differentstructures has been described in detail in the above embodiments, andwill not be further described herein.

An embodiment of the present disclosure further provides an emissioncontroller. As shown in FIG. 8, which is a structural schematic diagramof an emission controller according to an embodiment of the presentdisclosure, the emission controller includes a plurality of cascadedemission control circuits 100 as described above. Among the plurality ofemission control circuits 100, the shift control terminal NEXT of anemission control circuit 100 is electrically connected to the startingsignal terminal IN of a next emission control circuit 100.

Since the emission controller provided by the embodiment of the presentdisclosure includes the abovementioned emission control circuit 100,with the emission controller, the influence of the wiring in the displayarea on the shift control signal will be avoided, such that the shiftcontrol signal can be stably transmitted to the starting signal terminalIN of the next emission control circuit 100 and thus the next emissioncontrol circuit 100 can operate normally, thereby achieving normaldisplay of the image and improving the display quality.

It should be understood that the shift control terminal NEXT of a firstemission control circuit 100 can be electrically connected to a framestarting signal line STV. When it is needed to drive the first controlcircuit 100 to operate, the frame starting signal line STV provides astarting signal to the starting signal terminal IN of the first emissioncontrol circuit 100.

In addition, with further reference to FIG. 8, among the plurality ofcascaded emission control circuits 100, the first control signalterminal CK of each odd-numbered stage of emission control circuits 100is electrically connected to the first clock signal line CK1, and thesecond control signal terminal CKB is electrically connected to thesecond clock signal line CK2; the first control signal terminal CK ofeach even-numbered emission control circuit 100 is electricallyconnected to the second clock signal line CK2, and the second controlsignal terminal CKB is electrically connected to the first clock signalline CK1.

In addition, with further reference to FIG. 8, the first voltage signalterminal VGH in the emission control circuit 100 can be connected to adriving chip (not shown in the figure) through the first voltage signalline CL1, and the second voltage signal terminal VGL can be connected tothe driving chip through the second voltage signal line CL2.

An embodiment of the present disclosure further provides a displaydevice. As shown in FIG. 9, which is a structural schematic diagram of adisplay device according to an embodiment of the present disclosure, thedisplay device includes the abovementioned emission controller 200. Thestructure of the emission controller 200 has been described in detail inthe above embodiments, and will not be further described herein. Itshould be noted that, the display device shown in FIG. 9 is merelyillustrative, and the display device can be any electronic device havinga display function, such as a cellphone, a tablet computer, a notebookcomputer, an electronic paper book, or a television, etc.

Since the display device provided by the embodiment of the presentdisclosure includes the abovementioned emission controller 200, with thedisplay device, the influence of the wiring in the display area on theshift control signal can be avoided, such that the shift control signalcan be stably transmitted to the starting signal terminal of the nextemission control circuit and thus the next emission control circuit canoperate normally, thereby achieving normal display of the image andimproving the display quality.

The above-described embodiments are merely preferred embodiments of thepresent disclosure and are not intended to limit the present disclosure.Any modifications, equivalent substitutions and improvements made withinthe principle of the present disclosure shall fall into the protectionscope of the present disclosure.

What is claimed is:
 1. An emission controller, comprising one or moreemission control circuits, wherein each of the one or more emissioncontrol circuits comprises: a first processing module electricallyconnected to a starting signal terminal, a first voltage signalterminal, a first control signal terminal and a second control signalterminal and configured to generate a first signal to a first node inresponse to a first control signal, a second control signal and a secondsignal; a second processing module electrically connected to the firstcontrol signal terminal and a second voltage signal terminal andconfigured to generate the second signal to a second node in response tothe first control signal and the first signal; a third processing moduleelectrically connected to the second control signal terminal and thefirst voltage signal terminal and configured to generate a third signalto a third node and generate a fourth signal to a fourth node inresponse to the second control signal, the second signal and the firstsignal; an output module electrically connected to the first voltagesignal terminal, the second voltage signal terminal and an outputterminal and configured to provide an emission control signal to theoutput terminal in response to the first signal and the fourth signal;and a shift control module electrically connected to the first voltagesignal terminal and a shift control terminal, and configured to providea shift control signal to the shift control terminal in response to thefirst signal and the fourth signal or to provide a shift control signalto the shift control terminal in response to first signal and the thirdsignal, wherein in a first period in which the starting signal terminalprovides low level, the first control signal terminal provides low leveland the second control signal terminal provides high level, generating,by the first processing module, low level to the first node in responseto low level provided by the first control signal terminal, generating,by the second processing module, low level to the second node inresponse to low level provided by the first control signal terminal andlow level at the first node, generating, by the third processing module,high level to the third node and high level to the fourth node inresponse to low level at the second node and low level at the firstnode, controlling, by the output module, the output terminal to outputlow level in response to low level at the first node, and controlling,by the shift control module, the shift control terminal to output lowlevel in response to the first signal; in a second period in which thestarting signal terminal provides low level, the first control signalterminal provides high level, the second control signal terminalprovides low level, and the first node is maintained at low level,generating, by the second processing module, high level to the secondnode in response to low level at the first node, maintaining high levelat the third node, maintaining high level at the fourth node,maintaining low level output at the output terminal, and maintaining lowlevel output at the shift control terminal; in a third period in whichthe starting signal terminal provides high level, the first controlsignal terminal provides low level, and the second control signalterminal provides high level, generating, by the first processingmodule, high level to the first node in response to low level providedby the first control signal terminal, generating, by the secondprocessing module, low level to the second node in response to low levelprovided by the first control signal terminal, generating, by the thirdprocessing module, high level to the third node in response to low levelat the second node, maintaining high level at the fourth node,maintaining low level output at the output terminal, and maintaining lowlevel output at the shift control terminal; in a fourth period in whichthe starting signal terminal provides high level, the first controlsignal terminal provides high level, the second control signal terminalprovides low level, and the first node is maintained at high level andthe second node is maintained at low level, generating, by the thirdprocessing module, low level to the third node and low level to thefourth node in response to low level at the second node and low levelprovided by the second control signal terminal, controlling, by theoutput module, the output terminal to output high level in response tolow level at the fourth node, and controlling, by the shift controlmodule, the shift control terminal to output high level in response tolow level at the third node or the fourth node; and in a fifth period,the starting signal terminal provides high level, the first controlsignal terminal provides low level, the second control signal terminalprovides high level, and the first node is maintained at high level andthe second node is maintained at low level, generating, by the thirdprocessing module, high level to the third node in response to low levelat the second node, maintaining low level at the fourth node,maintaining high level output at the output module, controlling, by theshift control module, the shift control terminal to output high level inresponse to low level at the third node, or controlling, by the shiftcontrol module, the shift control terminal to output high level or lowlevel in response to low level at the fourth node, wherein the shiftcontrol module comprises: a twelfth thin film transistor having acontrol electrode electrically connected to the first node, a firstelectrode electrically connected to the shift control terminal, and asecond electrode electrically connected to the second voltage signalterminal; and a thirteenth thin film transistor having a controlelectrode electrically connected to the fourth node, a first electrodeelectrically connected to the first node, and a second electrodeelectrically connected to the shift control terminal, wherein in thefourth period, controlling, by the shift control module, the shiftcontrol terminal to output high level in response to low level at thefourth node comprises: in the fourth period, switching on the thirteenththin film transistor under low level at the fourth node, andtransmitting high level at the first node to the shift control terminal,such that the shift control terminal outputs high level; and in thefifth period, controlling, by the shift control module, the shiftcontrol terminal to output high level in response to low level at thefourth node comprises: in the fifth period, switching on the thirteenththin film transistor under low level at the fourth node, andtransmitting high level at the first node to the shift control terminal,such that the shift control terminal outputs high level.
 2. The emissioncontroller according to claim 1, wherein the first processing modulecomprises: a first thin film transistor having a control electrodeelectrically connected to the first control signal terminal, a firstelectrode electrically connected to the first node, and a secondelectrode electrically connected to the starting signal terminal; asecond thin film transistor having a control electrode electricallyconnected to the second control signal terminal, a first electrode, anda second electrode electrically connected to the first node; and a thirdthin film transistor having a control electrode electrically connectedto the second node, a first electrode electrically connected to thefirst voltage signal terminal, and a second electrode electricallyconnected to the first electrode of the second thin film transistor. 3.The emission controller according to claim 1, wherein the secondprocessing module comprises: a fourth thin film transistor having acontrol electrode electrically connected to the first node, a firstelectrode, and a second electrode electrically connected to the firstcontrol signal terminal; a fifth thin film transistor having a controlelectrode electrically connected to the first node, a first electrodeelectrically connected to the second node, and a second electrodeelectrically connected to the first electrode of the fourth thin filmtransistor; and a sixth thin film transistor having a control electrodeelectrically connected to the first control signal terminal, a firstelectrode electrically connected to the second node, and a secondelectrode electrically connected to the second voltage signal terminal.4. The emission controller according to claim 1, wherein the thirdprocessing module comprises: a first capacitor having a first electrodeelectrically connected to the second node and a second electrodeelectrically connected to the third node; a seventh thin film transistorhaving a control electrode electrically connected to the second node, afirst electrode electrically connected to the third node, and a secondelectrode electrically connected to the second control signal terminal;an eighth thin film transistor having a control electrode electricallyconnected to the second control signal terminal, a first electrodeelectrically connected to the third node, and a second electrodeelectrically connected to the fourth node; a ninth thin film transistorhaving a control electrode electrically connected to the first node, afirst electrode electrically connected to the first voltage signalterminal, and a second electrode electrically connected to the fourthnode; and a second capacitor having a first electrode electricallyconnected to the first voltage signal terminal and a second electrodeelectrically connected to the fourth node.
 5. The emission controlleraccording to claim 1, wherein the output module comprises: a tenth thinfilm transistor having a control electrode electrically connected to thefourth node, a first electrode electrically connected to the firstvoltage signal terminal, and a second electrode electrically connectedto the output terminal; and an eleventh thin film transistor having acontrol electrode electrically connected to the first node, a firstelectrode electrically connected to the output terminal, and a secondelectrode electrically connected to the second voltage signal terminal.6. The emission controller according to claim 1, further comprising: athird capacitor having a first electrode electrically connected to thefirst node and a second electrode electrically connected to the secondcontrol signal terminal.
 7. The emission controller according to claim1, wherein the one or more emission control circuits comprise aplurality of cascaded emission control circuits, wherein among theplurality of cascaded emission control circuits, the shift controlterminal of an emission control circuit is electrically connected to thestarting signal terminal of a next emission control circuit.
 8. Theemission controller according to claim 7, wherein among the plurality ofcascaded emission control circuits, the first control signal terminal ofeach odd-numbered stage of emission control circuit is electricallyconnected to a first clock signal line, and the second control signalterminal of each odd-numbered stage of emission control circuit iselectrically connected to a second clock signal line; and the firstcontrol signal terminal of each even-numbered stage of emission controlcircuit is electrically connected to the second clock signal line, andthe second control signal terminal of each even-numbered stage ofemission control circuit is electrically connected to the first clocksignal line.
 9. A driving method for an emission controller, wherein theemission controller comprises: a first processing module electricallyconnected to a starting signal terminal, a first voltage signalterminal, a first control signal terminal and a second control signalterminal and configured to generate a first signal to a first node inresponse to a first control signal, a second control signal and a secondsignal; a second processing module electrically connected to the firstcontrol signal terminal and a second voltage signal terminal andconfigured to generate the second signal to a second node in response tothe first control signal and the first signal; a third processing moduleelectrically connected to the second control signal terminal and thefirst voltage signal terminal and configured to generate a third signalto a third node and generate a fourth signal to a fourth node inresponse to the second control signal, the second signal and the firstsignal; an output module electrically connected to the first voltagesignal terminal, the second voltage signal terminal and an outputterminal and configured to provide an emission control signal to theoutput terminal in response to the first signal and the fourth signal;and a shift control module electrically connected to the first voltagesignal terminal and a shift control terminal, and configured to providea shift control signal to the shift control terminal in response to thefirst signal and the fourth signal or to provide a shift control signalto the shift control terminal in response to first signal and the thirdsignal, wherein the driving method for the emission controller comprisessteps of: in a first period in which the starting signal terminalprovides low level, the first control signal terminal provides low leveland the second control signal terminal provides high level, generating,by the first processing module, low level to the first node in responseto low level provided by the first control signal terminal, generating,by the second processing module, low level to the second node inresponse to low level provided by the first control signal terminal andlow level at the first node, generating, by the third processing module,high level to the third node and high level to the fourth node inresponse to low level at the second node and low level at the firstnode, controlling, by the output module, the output terminal to outputlow level in response to low level at the first node, and controlling,by the shift control module, the shift control terminal to output lowlevel in response to the first signal; in a second period in which thestarting signal terminal provides low level, the first control signalterminal provides high level, the second control signal terminalprovides low level, and the first node is maintained at low level,generating, by the second processing module, high level to the secondnode in response to low level at the first node, maintaining high levelat the third node, maintaining high level at the fourth node,maintaining low level output at the output terminal, and maintaining lowlevel output at the shift control terminal; in a third period in whichthe starting signal terminal provides high level, the first controlsignal terminal provides low level, and the second control signalterminal provides high level, generating, by the first processingmodule, high level to the first node in response to low level providedby the first control signal terminal, generating, by the secondprocessing module, low level to the second node in response to low levelprovided by the first control signal terminal, generating, by the thirdprocessing module, high level to the third node in response to low levelat the second node, maintaining high level at the fourth node,maintaining low level output at the output terminal, and maintaining lowlevel output at the shift control terminal; in a fourth period in whichthe starting signal terminal provides high level, the first controlsignal terminal provides high level, the second control signal terminalprovides low level, and the first node is maintained at high level andthe second node is maintained at low level, generating, by the thirdprocessing module, low level to the third node and low level to thefourth node in response to low level at the second node and low levelprovided by the second control signal terminal, controlling, by theoutput module, the output terminal to output high level in response tolow level at the fourth node, and controlling, by the shift controlmodule, the shift control terminal to output high level in response tolow level at the third node or the fourth node; and in a fifth period,the starting signal terminal provides high level, the first controlsignal terminal provides low level, the second control signal terminalprovides high level, and the first node is maintained at high level andthe second node is maintained at low level, generating, by the thirdprocessing module, high level to the third node in response to low levelat the second node, maintaining low level at the fourth node,maintaining high level output at the output module, controlling, by theshift control module, the shift control terminal to output high level inresponse to low level at the third node, or controlling, by the shiftcontrol module, the shift control terminal to output high level or lowlevel in response to low level at the fourth node, wherein the shiftcontrol module comprises: a twelfth thin film transistor having acontrol electrode electrically connected to the first node, a firstelectrode electrically connected to the shift control terminal, and asecond electrode electrically connected to the second voltage signalterminal; and a thirteenth thin film transistor having a controlelectrode electrically connected to the fourth node, a first electrodeelectrically connected to the first node, and a second electrodeelectrically connected to the shift control terminal, in the fourthperiod, controlling, by the shift control module, the shift controlterminal to output high level in response to low level at the fourthnode comprises: in the fourth period, switching on the thirteenth thinfilm transistor under low level at the fourth node, and transmittinghigh level at the first node to the shift control terminal, such thatthe shift control terminal outputs high level; and in the fifth period,controlling, by the shift control module, the shift control terminal tooutput high level in response to low level at the fourth node comprises:in the fifth period, switching on the thirteenth thin film transistorunder low level at the fourth node, and transmitting high level at thefirst node to the shift control terminal, such that the shift controlterminal outputs high level.
 10. The driving method for the emissioncontroller according to claim 9, wherein the shift control modulecomprises: a fourteenth thin film transistor having a control electrodeelectrically connected to the first node, a first electrode electricallyconnected to the shift control terminal, and a second electrodeelectrically connected to the second voltage signal terminal; and afifteenth thin film transistor having a control electrode electricallyconnected to the fourth node, a first electrode electrically connectedto the first control signal terminal, and a second electrodeelectrically connected to the shift control terminal, whereincontrolling, by the shift control module, the shift control terminal tooutput high level in response to low level at the fourth node in thefourth period comprises: in the fourth period, switching on thefifteenth thin film transistor under low level at the fourth node, andtransmitting high level provided by the first control signal terminal tothe shift control terminal, such that the shift control terminal outputshigh level; and wherein controlling, by the shift control module, theshift control terminal to output low level in response to low level atthe fourth node in the fifth period comprises: in the fifth period,switching on the fifteenth thin film transistor under low level at thefourth node, and transmitting low level provided by the first controlsignal terminal to the shift control terminal, such that the shiftcontrol terminal outputs low level.
 11. The driving method for theemission controller according to claim 9, wherein the shift controlmodule comprises: a sixteenth thin film transistor having a controlelectrode electrically connected to the first node, a first electrodeelectrically connected to the shift control terminal, and a secondelectrode electrically connected to the second voltage signal terminal;and a seventeenth thin film transistor having a control electrodeelectrically connected to the third node, a first electrode electricallyconnected to the first node, and a second electrode electricallyconnected to the shift control terminal, wherein controlling, by theshift control module, the shift control terminal to output high level inresponse to low level at the third node in the fourth period comprises:in the fourth period, switching on the seventeenth thin film transistorunder low level at the third node, and transmitting high level at thefirst node to the shift control terminal, such that the shift controlterminal outputs high level.
 12. A display device, comprising anemission controller, wherein the emission controller comprises one ormore emission control circuits, and each of the one or more emissioncontrol circuits comprises: a first processing module electricallyconnected to a starting signal terminal, a first voltage signalterminal, a first control signal terminal and a second control signalterminal and configured to generate a first signal to a first node inresponse to a first control signal, a second control signal and a secondsignal; a second processing module electrically connected to the firstcontrol signal terminal and a second voltage signal terminal andconfigured to generate the second signal to a second node in response tothe first control signal and the first signal; a third processing moduleelectrically connected to the second control signal terminal and thefirst voltage signal terminal and configured to generate a third signalto a third node and generate a fourth signal to a fourth node inresponse to the second control signal, the second signal and the firstsignal; an output module electrically connected to the first voltagesignal terminal, the second voltage signal terminal and an outputterminal and configured to provide an emission control signal to theoutput terminal in response to the first signal and the fourth signal;and a shift control module electrically connected to the first voltagesignal terminal and a shift control terminal, and configured to providea shift control signal to the shift control terminal in response to thefirst signal and the fourth signal or to provide a shift control signalto the shift control terminal in response to first signal and the thirdsignal, wherein the one or more emission control circuits comprise aplurality of cascaded emission control circuits, and among the pluralityof cascaded emission control circuits, the shift control terminal of anemission control circuit is electrically connected to the startingsignal terminal of a next emission control circuit, wherein in a firstperiod in which the starting signal terminal provides low level, thefirst control signal terminal provides low level and the second controlsignal terminal provides high level, generating, by the first processingmodule, low level to the first node in response to low level provided bythe first control signal terminal, generating, by the second processingmodule, low level to the second node in response to low level providedby the first control signal terminal and low level at the first node,generating, by the third processing module, high level to the third nodeand high level to the fourth node in response to low level at the secondnode and low level at the first node, controlling, by the output module,the output terminal to output low level in response to low level at thefirst node, and controlling, by the shift control module, the shiftcontrol terminal to output low level in response to the first signal; ina second period in which the starting signal terminal provides lowlevel, the first control signal terminal provides high level, the secondcontrol signal terminal provides low level, and the first node ismaintained at low level, generating, by the second processing module,high level to the second node in response to low level at the firstnode, maintaining high level at the third node, maintaining high levelat the fourth node, maintaining low level output at the output terminal,and maintaining low level output at the shift control terminal; in athird period in which the starting signal terminal provides high level,the first control signal terminal provides low level, and the secondcontrol signal terminal provides high level, generating, by the firstprocessing module, high level to the first node in response to low levelprovided by the first control signal terminal, generating, by the secondprocessing module, low level to the second node in response to low levelprovided by the first control signal terminal, generating, by the thirdprocessing module, high level to the third node in response to low levelat the second node, maintaining high level at the fourth node,maintaining low level output at the output terminal, and maintaining lowlevel output at the shift control terminal; in a fourth period in whichthe starting signal terminal provides high level, the first controlsignal terminal provides high level, the second control signal terminalprovides low level, and the first node is maintained at high level andthe second node is maintained at low level, generating, by the thirdprocessing module, low level to the third node and low level to thefourth node in response to low level at the second node and low levelprovided by the second control signal terminal, controlling, by theoutput module, the output terminal to output high level in response tolow level at the fourth node, and controlling, by the shift controlmodule, the shift control terminal to output high level in response tolow level at the third node or the fourth node; and in a fifth period,the starting signal terminal provides high level, the first controlsignal terminal provides low level, the second control signal terminalprovides high level, and the first node is maintained at high level andthe second node is maintained at low level, generating, by the thirdprocessing module, high level to the third node in response to low levelat the second node, maintaining low level at the fourth node,maintaining high level output at the output module, controlling, by theshift control module, the shift control terminal to output high level inresponse to low level at the third node, or controlling, by the shiftcontrol module, the shift control terminal to output high level or lowlevel in response to low level at the fourth node, wherein the shiftcontrol module comprises: a twelfth thin film transistor having acontrol electrode electrically connected to the first node, a firstelectrode electrically connected to the shift control terminal, and asecond electrode electrically connected to the second voltage signalterminal; and a thirteenth thin film transistor having a controlelectrode electrically connected to the fourth node, a first electrodeelectrically connected to the first node, and a second electrodeelectrically connected to the shift control terminal, wherein in thefourth period, controlling, by the shift control module, the shiftcontrol terminal to output high level in response to low level at thefourth node comprises: in the fourth period, switching on the thirteenththin film transistor under low level at the fourth node, andtransmitting high level at the first node to the shift control terminal,such that the shift control terminal outputs high level; and in thefifth period, controlling, by the shift control module, the shiftcontrol terminal to output high level in response to low level at thefourth node comprises: in the fifth period, switching on the thirteenththin film transistor under low level at the fourth node, andtransmitting high level at the first node to the shift control terminal,such that the shift control terminal outputs high level.
 13. The displaydevice according to claim 12, wherein among the plurality of cascadedemission control circuits, the first control signal terminal of eachodd-numbered stage of emission control circuit is electrically connectedto a first clock signal line, and the second control signal terminal ofeach odd-numbered stage of emission control circuit is electricallyconnected to a second clock signal line; and the first control signalterminal of each even-numbered stage of emission control circuit iselectrically connected to the second clock signal line, and the secondcontrol signal terminal of each even-numbered stage of emission controlcircuit is electrically connected to the first clock signal line.